We moved into this house 3 years ago. It is 15 years old and we noticed in the past 2 years nails popping out along the ceiling by the front door, the kitchen counters have come away from the walls about 1/4 inch by the side door, ceiling cracks are starting to appear around the stairs which are in the middle of the house and the bathroom door is off by quite a bit. I know the house will settle but do I need to be concerned. The popping nails really upset me as the ceiling is textured and vaulted and is open floor plan for the kitchen and living room. Is this a serious problem or just normal house settleing.